L Premium Door BottomSealer™


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Finally, a Garage Door Seal that Actually Works!

Seal doors tight with the StopTheSnirt BottomSealer™ and keep out snow, dirt, leaves, debris, insects, spiders, snakes, frogs and more!  Our patented BottomSealer™ technology features a high-density foam core weatherstripping astragal that’s engineered to seal, saving you money on energy by stopping cold drafts and eliminating temperature bridges. The new large size seals from .75 up to 1.5 inch gaps, and the larger 1.5 inch inner thermal tube provides a more heavy-duty seal on larger gaps than the regular size can achieve. A warmer garage means a warmer house! The BottomSealer™ also reduces freeze down by eliminating the water and snow that can melt and refreeze under the door and cause the door to freeze to the ground. Each seal is made of heavy-duty, Kevlar reinforced woven polyester that stays pliable and resilient for years. It will not tear and never wears out, and we offer a limited Lifetime Warranty to prove it!


Got a big gap but not sure what size BottomSealer you need for your door?
No problem! Now you can try before you buy! Free!*

Order L BottomSealer samples here!

*Restrictions apply. See sample product page for complete details.

Sealing the bottom of a garage door: Before and After

How to Install StopTheSnirt™ BottomSealer™

Works on All Types of Commercial Bay Doors, Too!

StopTheSnirt is not just for residential garage doors. It works on all types of commercial doors, too, including:

  • Overhead Doors
  • Sliding Doors
  • BiFold  Doors
  • Hydroswing Hydraulic Doors

Sloppy, loose fitting bay doors can be a huge source of heating and cooling loss and present a security risk. Seal them up tight with a SnirtStopper™ and keep your shipping and receiving employees happier with a cleaner, warmer and more secure shipping area.

Perfect for All Types of Large Buildings!

StopTheSnirt is perfectly suited for all types of large commercial buildings, too, including:

  • Farm Shops
  • Warehouses
  • Shipping and Receiving Docks
  • Aircraft Hangars

Installation is Easy!

Regardless the application, our BottomSealer™ couldn’t be easier to install. Every order comes with color-matched self-tapping screws. All you need is scissors to cut the seal to length and a drill to drive the screws! You don’t even need to remove the old seals. It’s that simple!

Seal your garage door, commercial shipping doors, docking bay overhead doors or even worn out walk-through doors in minutes with a StopTheSnirt BottomSealer™ today and Stop The Snirt!

Big gaps? Big Snirt? You need Big SnirtStopper!

Custom Sizing Available!


  • Saves energy!
  • Seals gaps up to 1.5 inches!
  • New larger thermal tube provides a heavy-duty seal!
  • Corrects uneven doors and floors
  • No need to remove any of the old door seal, astragal or hardware
  • Comes in black or white for a simple, clean look on any door
  • Installs easily with included color-matched, self-tapping screws
  • Average installation time under 15 minutes
  • Fits perfectly the first time
  • Fills the gap under your garage door!
  • Helps prevent garage door from freezing to the ground
  • Keeps out the elements like snow, rain, dust, dirt and more
  • Keeps out all critters like varmints, bugs, spiders, rats, mice, frogs, insects and even snakes
  • Wiper seal rides under door constantly adjusting to the floor
  • High density foam core insulates the bottom of the door
  • Made of heavy-duty, Kevlar reinforced woven polyester so it stays pliable and resilient for years and never wears out!
  • Made in the USA!
  • We ship anywhere**

* We offer a military discount for active military personnel. Call for details.

** We ship worldwide. Please call for shipping rates outside the continental US.


Per Foot, 8 ft., 9 ft., 10 ft., 11 ft., 12 ft., 13 ft., 14 ft., 15 ft., 16 ft., 17 ft., 18 ft., 19 ft., 20 ft., 21 ft., 22 ft., 23 ft., 24 ft., 25 ft., 26 ft., 28 ft., 30 ft., 32 ft., 34 ft., 36 ft., 38 ft., 40 ft., 42 ft., 44 ft.